The use of an algorithm for prophylactic mesh use in high risk patients reduces the incidence of incisional hernia following laparotomy for colorectal cancer resection. / Un algoritmo para la colocación de malla profiláctica en pacientes de riesgo reduce la incidencia de hernia incisional tras laparotomía por cáncer colorrectal.

OBJECTIVE: Incisional hernia (IH) after colorectal surgery is highly prevalent. The objective of this study is to assess the utility of an algorithm to decide on mesh augmentation after a midline laparotomy for colorectal resection to prevent IH in high-risk patients. METHODS: A prospective study was conducted including all patients undergoing a midline laparotomy for colorectal resection between January 2011 and June 2014, after the implementation of a decision algorithm for prophylactic mesh augmentation in selected high-risk patients. Intention-to-treat analyses were conducted between patients in which the algorithm was correctly applied and those in which it was not. RESULTS: From the 235 patients analysed, the algorithm was followed in 166 patients, the resting 69 cases were used as a control group. From an initial adherence to the algorithm of 40% in the first semester, a 90.3% adherence was achieved in the seventh semester. The incidence of IH decreased as the adherence to the algorithm increased (from 28 to 0%) with a time-related correlation (R2=0.781). A statistically significant reduction in IH incidence was demonstrated in high-risk groups in which the algorithm was correctly applied (10,2 vs. 46,3%; p=0,0001; OR: 7,58;95%; CI: 3,8-15). Survival analysis showed that the differences remained constant during follow-up. CONCLUSION: The implementation of the algorithm reduces the incidence of IH in high-risk patients. The adherence to the algorithm also correlates with a decrease in the incidence of IH.

Preoperative preparation of «loss of domain¼ hernia. Progressive pneumoperitoneum and botulinum toxin type A. / Preparación preoperatoria de la hernia con pérdida de domicilio. Neumoperitoneo progresivo y toxina botulínica tipo A.

Preoperative progressive pneumoperitoneum and botulinum toxin type A are useful tools in the preparation of patients with loss of domain hernias. Both procedures are complementary in the surgical repair, especially with the use of prosthetic techniques without tension, that allow a integral management of these patients. The aim of this paper is to update concepts related to both procedures, emphasizing the advantages that take place in the preoperative management of loss of domain hernias.

Initial results of the National Registry of Incisional Hernia. / Resultados iniciales del Registro Español de Hernia Incisional.

INTRODUCTION: The aim of this study was to the data from the National Registry of Incisional Hernia (EVEREG) to determine the reality of the treatment of this condition in Spain. METHODS: EVEREG is an online prospective database which has been functioning since July 2012; operations for incisional hernia are anonymously recorded. RESULTS: Up to March 2015, 4501 hernias from 95 of the 113 participating hospitals were registered. The mean age of the patients was 62.7, and 56.5% were women, with a mean BMI of 30.2kg/m2; 29.8% presented a high surgical risk (ASA III-V). A total of 93.7% were scheduled surgeries, 88.3% open surgery and 22.2% were recurrent incisional hernias. There were 66.9% hernias after a midline laparotomy, and 81.4% of a transverse diameter of less than 10cm. A mesh was used in 96.2% of cases. Postoperative stay was 5.3 days and 29.1% presented a complication, with a mortality of 0.8%. After a median follow-up of 7.7 months a high rate of recurrence was detected (20.7% per year), especially in hernias that were operated on after a previous repair (18.1% primary vs. 30.6% recurrent; P=.004). CONCLUSION: the EVEREG registry is a useful tool to know the current situation of incisional hernia treatment. Analysis of the data shows several points that could be improved: a low rate of follow-up and high recurrence rate.

Abdominal wall closure after a stomal reversal procedure.

The closure of a temporary stoma involves 2 different surgical procedures: the stoma reversal procedure and the abdominal wall reconstruction of the stoma site. The management of the abdominal wall has different areas that should be analyzed such us how to avoid surgical site infection (SSI), the technique to be used in case of a concomitant hernia at the stoma site or to prevent an incisional hernia in the future, how to deal with the incision when the stoma reversal procedure is performed by laparoscopy and how to close the skin at the stoma site. The aim of this paper is to analyze these aspects in relation to abdominal wall reconstruction during a stoma reversal procedure.

The evolution of incisional hernia repair in Spain. A comparative analysis of results from the EVEREG registry.

BACKGROUND: The aim of this study was to assess the utility of the EVEREG registry in evaluating the evolution of surgical treatment for incisional hernia and its outcomes in Spain by comparing data from 2 study periods. METHODS: A retrospective comparative analysis of hernia surgeries performed between 2011 and 2015 (first period) and between 2017 and 2022 (second period) was conducted using data collected from the EVEREG registry. RESULTS: Statistically significant differences were observed in the second cohort, including: a decrease in minimally invasive procedures (11.7% vs 8.2%; P < .001), an increase in emergency surgeries for males (31.7% vs 41.2%; P = .017), an increase in trocar hernia repairs (16% vs 26.2%; P < .0001), a reduction in suture repairs (2.8% vs 1.5%; P < .0001), and an increase in retromuscular techniques (36.4% vs 52.4%; P < .001) in open surgery with mesh. In elective surgery, there was a decrease in the average length of stay (4.9 vs 3.8 days; P < .0001), the percentage of complications (27.9% vs 24.0%; P < .0001), reoperations (3.5% vs 1.4%; P < .0001), and mortality (0.6% vs 0.2%; P = .002). Long-term outcomes included a decrease in recurrences after 12 months (20.7% vs 14.5%; P < .0001) and in chronic pain (13.7% vs 2.5%; P < .0001) and chronic infections (9.1% vs 14.5%; P < .0001) after 6 months. CONCLUSION: In recent years, there has been a significant improvement in the outcomes of incisional hernia treatment. The registry serves as a fundamental tool for assessing the evolution of hernia treatment and enables the identification of key areas for improvement and the evaluation of treatment outcomes.

Use of botulinum toxin type A in the prehabilitation of abdominal wall musculature for hernia repair: a consensus proposal.

The prehabilitation of the abdominal wall through the infiltration of botulinum toxin type A, which induces temporary chemical denervation ("chemical component separation") in the lateral abdominal musculature, is a common practice in units specialized in abdominal wall surgery. However, its use for this indication is currently off-label. The main objective of this article is to describe a consensus proposal regarding indications, contraindications, dosages employed, potential side effects, administration method, and measurement of possible outcomes. Additionally, a proposal for an informed consent document endorsed by the Abdominal Wall Section of the Spanish Association of Surgeons is attached.

[Results of a national survey on abdominal wall closure]. / Resultados de una encuesta nacional sobre el cierre de la pared abdominal.

OBJECTIVE: To assess knowledge on the abdominal wall closure through a surgeon cohort survey. METHODS: A twenty question individual questionnaire on laparotomy in elective surgery. RESULTS: A total of 131 surgeons from seven hospitals responded (72% specialists and 28% in training). 71% of respondents estimated the frequency of incisional hernia to be higher than 15% and 54% considered the technique to be the most significant risk factor. 85% considered midline laparotomy closed with slow absorbable suture (57%) in a single layer (66%) to be the most appropriate technique. 67% believed retention sutures to be the appropriate prevention technique. 50% did not know or could not apply the 4:1 technique. 87% considered that an incisional hernia can be prevented and that the technique is the most important factor on which to act. 84% believed that a prosthesis can prevent the occurrence of incisional hernia, whereas 40% of respondents never use it and only 38% use it in patients at risk. On comparing surveys between specialists and residents, significant differences appeared in terms of a better understanding of the theoretical technical aspects in trainee surgeons. CONCLUSIONS: Although the results show an adequate understanding of the epidemiology and risk factors for development of incisional hernia, training and consensus measures are likely to be introduced in some basic technical aspects in order to improve results in laparotomy closure.

National survey of colorectal surgery units on abdominal wall closure.

INTRODUCTION: The purpose of this study is to assess the current status and knowledge of the Spanish colorectal surgeons on the wall closure. METHODS: A single answer questionnaire of 25 closed questions was conducted using specific software for online surveys that was distributed to a cohort of colorectal surgeons. RESULTS: 53 surgeons replied to the survey. The vast majority prefer a closure of the midlaparotomy with a very slow absorbing monofilament (67.92%) continuous suture (96.23%) in a single plane (81.13%). Mass stitches, retention systems, and loop sutures continue to be used. The most commonly used suture gauge was USP 1 (United States Pharmacopeia) (58.49%). The most commonly used needle is with a cylindrical body and a trocar tip. Only 50%, routinely perform wall closure after placement of a trocar equal to or greater than 10 mm. Almost everyone knows the 4:1 rule and thinks it should be applied, but the small bites technique is not performed. 50% would never place a prophylactic prosthesis. The closure is usually performed by the same surgeon who has performed the entire procedure. One out of five confesses not knowing the rate of incisional hernias in his unit. CONCLUSION: There is a lack of consensus and basic knowledge regarding the technical aspects of closure and the prevention of the appearance of incisional hernias. The use of slow absorbing monofilament continuous suture in a single plane seems well accepted.

Umbilical incisional hernias (M3): are trocar-site hernias different? Comparative analysis of the EVEREG registry⋆.

BACKGROUND: Incisional hernia (HI), in open and laparoscopic surgery, is a very frequent complication. HI located in the umbilical region are called M3. The main aim of this study is to compare HI produced by the placement of an umbilical laparoscopic trocar (M3T) with those located in M3 in open surgery (M3O) in terms of basal characteristics, complications and recurrences; and secondarily the identification of risk factors. METHOD: Cross-sectional observational study based on the national prospective registry EVEREG during the period of July 2012-June 2018. The main variables were recurrences and postoperative complications. Both groups (M3T and M3O) were compared. Multiple logistic regression was performed to identify the risk factors of the entire cohort. RESULTS: 882 had a follow-up time longer than 12 months. M3O group presented superior ASA-Class, more complex HI and previous repair. It also presented a higher recurrence rate at 12 and 24 months (8.6% vs. 2.5%; P < 0,0001 and 9.3% vs. 2.9%; P < 0.0001) and higher postoperative complications rate (21.9% vs. 14.6 %; P = 0.02). Previous repair, intervention length and associated procedures requirement were identified as risk factors for postoperative complications. Absence of a specialist present during surgery, previous repair, and the absence of complications were identified as risk factors for recurrence. In the PSM analysis no differences were detected in of complications and recurrences. CONCLUSIONS: HI M3O is more complex than M3T. The complexity is not related to the origin of the hernia but to its characteristics and those of the patient.

Expanding indication of laparoscopic intracorporeal rectus aponeuroplasty (LIRA) to suprapubic area: LIRA & TAPE.

Laparoscopic intracorporeal rectus aponeuroplasty (LIRA) is a minimally invasive technique described to repair M2-M4 primary and incisional hernias. Defects below this area (M5 - Suprapubic area) could be treated using the concept associated to LIRA, expanding the indication of this technique in combination with a transabdominal partially extraperitoneal (TAPE) repair. The aim of this video is to show the surgical steps in the combination of LIRA & TAPE for M2-M5 ventral hernias.

Incidence and risk factors for incisional hernia after open abdominal aortic aneurysm repair.

INTRODUCTION: Incisional hernia (IH) is common after open abdominal aortic aneurysm (AAA) repair. Recent studies reported incidence rates higher than previously stated. The aim of this study was to quantify the IH incidence after open AAA surgery. The secondary outcome was to identify the risk factors associated with the development of an IH. METHODS: Retrospective observational study of all consecutive patients who underwent an open repair of AAA, from January 2010 to June 2018, at our institution. Patients were free of abdominal wall hernias at the moment of inclusion in the study. Data were extracted from electronic records: baseline characteristics, surgical factors, and postoperative events. Computed tomography (CT) scans performed during follow-up were analyzed. RESULTS: A total of 157 patients were analysed. The IH incidence after open repair of AAA was 46.5% (73 patients). The median time for IH development was 24.43 months (IQR: 10.40-45.27), while the median follow-up time was 37.20 months (IQR: 20.53-64.12). The risk factors linked to IH were: active (HR: 4.535; 95% CI: 1.369-15.022) or previous smoking habit (HR: 4.652; 95% CI: 1.430-15.131), chronic kidney disease (HR: 2.007; 95% CI: 1.162-3.467) and previous abdominal surgery (HR: 1.653; 95% CI: 1.014-2.695). CONCLUSION: The incisional hernia after open abdominal aortic aneurysm repair affected a high proportion of the intervened patients. Previous abdominal surgery, chronic kidney disease, and smoking habit were independent factors for the development of an incisional hernia.

Umbilical incisional hernia (M3) Are trocar hernia differents? Comparative analysis of the EVEREG Registry. / Hernia incisional umbilical (M3). ¿Son diferentes las hernias de trócar? Análisis comparativo del registro EVEREG.

INTRODUCTION: Incisional hernia (HI), in open and laparoscopic surgery, is a very frequent complication. HI located in the umbilical region are called M3. The main aim of this study is to compare HI produced by the placement of an umbilical laparoscopic trocar (M3T) with those located in M3 in open surgery (M3O) in terms of basal characteristics, complications and recurrences; and secondarily the identification of risk factors. METHOD: Cross-sectional observational study based on the national prospective registry EVEREG during the period of July 2012 - June 2018. The main variables were recurrences and postoperative complications. Both groups (M3T and M3O) were compared. Multiple logistic regression was performed to identify the risk factors of the entire cohort. RESULTS: 882 had a follow-up time longer than 12 months. M3O group presented superior ASA-Class, more complex HI and previous repair. It also presented a higher recurrence rate at 12 and 24 months (8.6 vs. 2.5%; p < 0,0001 and 9.3 vs. 2.9%; p < 0.0001) and higher postoperative complications rate (21.9 vs. 14.6%; p = 0.02). Previous repair, intervention length and associated procedures requirement were identified as risk factors for postoperative complications. Absence of a specialist present during surgery, previous repair, and the absence of complications were identified as risk factors for recurrence. In the PSM analysis no differences were detected in of complications and recurrences. CONCLUSIONS: HI M3O is more complex than M3T. The complexity is not related to the origin of the hernia but to its characteristics and those of the patient.

TARUP technique. Advantages of minimally invasive robot-assisted abdominal Wall surgery. / Técnica TARUP. Ventajas de la cirugía mínimamente invasiva de la pared abdominal asistida por robot.

The use of robot-assisted minimally invasive surgery in ventral/incisional hernia repair has increased exponentially in recent years. This increase is probably related to the advantages of robotic surgery, among which are better visualization, the implementation of articulated instruments and better ergonomics for the surgeon. The TARUP (Robotic Transabdominal Retromuscular Umbilical Prosthetic Hernia Repair) technique combines the benefits of minimally invasive surgery, in terms of less wound-related morbidity, also allowing the placement of a mesh in a retromuscular position facilitated by the use of the robotic platform.

[Late kidney transplant complications treatment.] / Tratamiento de las complicaciones tardías del trasplante renal.

OBJECTIVES: Late kidney transplant complication might compromise graft durability, thus the need for early detection and treatment. MATERIAL AND METHODS: A PubMed review including the following MeSH terms was included: kidney transplant¨, ¨complications¨, ¨vascular complications¨,¨transplant renal artery stenosis¨, ¨ureteral obstruction¨,¨urologic complications¨, ¨forgotten stent¨, ¨vesicoureteralreflux¨, ¨urinary lithiasis¨ e ¨incisional hernia¨. Metanalysis and systematic review in spanish and English were included from January 2015 till February 2021, as well as relevant selected manuscripts. RESULTS: We defined as late complications those appearing at 3 months from kidney transplant. Those include vascular complications (renal artery stricture), urinary tract (ureteral stricture, permanent double Js, pyelonephritis due to reflux, urinary stones) and abdominal wall (incisional hernia). CONCLUSIONS: Late kidney transplant complications remain high still with advancement on surgical technique and immunotherapy. Those complication might compromise the graft durability and so early detection is or primary importance.

OBJETIVO: Las complicaciones tardías del trasplante renal pueden comprometer de manera importante la viabilidad del injerto, por lo que debemos detectarlas y tratarlas de manera precoz.MATERIAL Y MÉTODOS: Realizamos una revisión bibliográfica en PubMed utilizando los términos MeSH ¨kidney transplant¨, ¨complications¨, ¨vascular complications¨, ¨transplant renal artery stenosis¨, ¨ureteralobstruction¨, ¨urologic complications¨, ¨forgotten stent¨,¨vesicoureteral reflux¨, ¨urinary lithiasis¨ e ¨incisionalhernia¨. Se incluyeron metaanálisis, revisiones y revisiones sistemáticas en inglés y español, desde enero de2015 hasta febrero de 2021, así como las referencias más relevantes incluidas en los artículos seleccionados. RESULTADOS: Definimos como complicaciones tardías aquellas que suelen aparecer a partir del tercer mes trasla realización del trasplante. Dentro de ellas se incluyen complicaciones vasculares (estenosis de la arteria renal), de la vía urinaria (estenosis ureteral, catéteres ureterales no retirados, pielonefritis secundarias a reflujovesico-ureteral y litiasis urinaria) y de pared (hernia incisional). CONCLUSIONES: A pesar de los avances, tanto médicos (inmunosupresión) como en la técnica quirúrgica, en el trasplante renal, todavía son frecuentes las complicaciones a largo plazo. Estas complicaciones pueden comprometer la viabilidad del injerto renal, lo que hace necesario que sean detectadas lo antes posible, y no demorar su tratamiento.

Incidence and risk factors for incisional hernia after open abdominal aortic aneurysm repair.

INTRODUCTION: Incisional hernia (IH) is common after open abdominal aortic aneurysm (AAA) repair. Recent studies reported incidence rates higher than previously stated. The aim of this study was to quantify the IH incidence after open AAA surgery. The secondary outcome was to identify the risk factors associated with the development of an IH. METHODS: Retrospective observational study of all consecutive patients who underwent an open repair of AAA, from January 2010 to June 2018, at our institution. Patients were free of abdominal wall hernias at the moment of inclusion in the study. Data were extracted from electronic records: baseline characteristics, surgical factors, and postoperative events. Computed tomography (CT) scans performed during follow-up were analyzed. RESULTS: A total of 157 patients were analysed. The IH incidence after open repair of AAA was 46.5% (73 patients). The median time for IH development was 24.43 months (IQR: 10.40-45.27), while the median follow-up time was 37.20 months (IQR: 20.53-64.12). The risk factors linked to IH were: active (HR: 4.535; 95% CI: 1.369-15.022) or previous smoking habit (HR: 4.652; 95% CI: 1.430-15.131), chronic kidney disease (HR: 2.007; 95% CI: 1.162-3.467) and previous abdominal surgery (HR: 1.653; 95% CI: 1.014-2.695). CONCLUSION: The incisional hernia after open abdominal aortic aneurysm repair affected a high proportion of the intervened patients. Previous abdominal surgery, chronic kidney disease, and smoking habit were independent factors for the development of an incisional hernia.

Comparative analysis of 2 surgical techniques in the treatment of subxiphoid incisional hernia. Observational study.

INTRODUCTION: The surgical procedure to repair a subxiphoid incisional hernia is a complex technique due to the anatomical area that it appears. The objective of our study is the analysis of the results obtained with the different surgical techniques performed in our center for 9 years, especially postoperative complications and the recurrence rate. METHODS: It is an observational, retrospective study from January 2011 to January 2019 of patients operated of subxiphoid incisional hernia in our Unit. We analysed the comorbidities, surgical techniques (preperitoneal hernia repair or TP, and adjusted double mesh technique) and postoperative variable, especially the hernia recurrence. The postoperative complications were summarized flowing the Clavien-Dindo classification. RESULTS: 42 patients were operated: 22 (52,4%) TP and 20 (47,6%) adjusted double mesh technique. All the complications registered were minor (grade I) and it appeared mostly in TP group (P = .053). The average follow up was 25.8 ± 15.1 months; there were no statistically significant differences in hernia recurrence comparing two treatment groups (P = .288). CONCLUSIONS: According to our results, TP is the ideal technique to repair a subxiphoid incisional hernia. Adjusted double mesh technique may represent an effective approach with a low complication rate, although globally analyzing the recurrence rate, aponeurosis closure over the preperitoneal mesh entails less impact on it.

Incisional hernia repair outcome after renal transplantation in a reference center. Our experience of 7 years. / Resultados de la reparación de la hernia incisional asociada al trasplante renal en un centro especializado. Análisis de nuestra experiencia de 7 años.

INTRODUCTION: Incisional hernias secondary to renal transplantation (IHRT) are considered complex hernias because they are lateral to the sheath of the rectus abdominis muscle. The presence of the graft in the iliac fossa and the proximity to the inguinal area, costal margin and iliac bones, as zones with difficult fixation for prostheses, increases repair complexity. In addition, these patients have specific characteristics, such as treatment with immunosuppressive medication, that could alter postoperative evolution. The objective of this study was to analyze the results obtained in IHRT repair at a tertiary hospital, and to compare these data with the international literature. METHODS: Retrospective observational study of patients treated surgically for IHRT in our unit from January 1, 2011 to January 31, 2018. Preoperative conditions, intraoperative factors and postoperative complications during follow-up were analyzed. RESULTS: Twenty-five patients underwent hernia repair, finding a 4% hernia recurrence rate during a median follow-up of 27.5 months (20-39). The most frequently used technique was the posterior transversus abdominis release component separation technique in 42%, followed by preperitoneal repair in 27% and interoblique repair in 12%. The overall postoperative morbidity was 23%, which was frequently related to the surgical site (12%). CONCLUSIONS: IHRT repair is a safe procedure at our medical center, with an acceptable rate of hernia recurrence, but it is not without complications.

Bone mesh fixation for the treatment of suprailiac hernia. Report of two cases.

Hernias of the lateral abdominal wall are a rare entity. In most cases, they occur after surgery or trauma. We present two cases of lumbar hernia: the first one after iliac bone grafting and the second one after muscular tearing by the seatbelt during a car accident. Both cases were successfully repaired using a propylene mesh with bone fixation.

Las eventraciones de la pared lateral del abdomen son poco frecuentes. Pueden ser posquirúrgicas o causadas por agentes traumáticos. Se presentan dos casos de eventración lumbar: el primero tras una resección ósea por autoinjerto de cresta ilíaca y el segundo por desinserción muscular por cinturón de seguridad secundaria a un accidente en la vía pública. Ambos fueron resueltos quirúrgicamente con colocación de una malla de polipropileno fijada a hueso.

Comparative analysis of 2 surgical techniques in the treatment of subxiphoid incisional hernia. Observational study. / Análisis comparativo de 2 técnicas quirúrgicas en el tratamiento de la hernia incisional subxifoidea. Estudio observacional.

INTRODUCTION: The surgical procedure to repair a subxiphoid incisional hernia is a complex technique due to the anatomical area that it appears. The objective of our study is the analysis of the results obtained with the different surgical techniques performed in our center for 9 years, especially postoperative complications and the recurrence rate. METHODS: It is an observational, retrospective study from January 2011 to January 2019 of patients operated of subxiphoid incisional hernia in our Unit. We analysed the comorbidities, surgical techniques (preperitoneal hernia repair or TP, and adjusted double mesh technique) and postoperative variable, especially the hernia recurrence. The postoperative complications were summarized flowing the Clavien-Dindo classification. RESULTS: 42 patients were operated: 22 (52,4%) TP and 20 (47,6%) adjusted double mesh technique. All the complications registered were minor (grade I) and it appeared mostly in TP group (P=.053). The average follow up was 25.8±15.1 months; there were no statistically significant differences in hernia recurrence comparing two treatment groups (P=.288). CONCLUSIONS: According to our results, TP is the ideal technique to repair a subxiphoid incisional hernia. Adjusted double mesh technique may represent an effective approach with a low complication rate, although globally analyzing the recurrence rate, aponeurosis closure over the preperitoneal mesh entails less impact on it.

Predictive factors for complexity in abdominal wall hernias: a literature scope review / Análise dos fatores preditores de complexidade de hérnias da parede abdominal: uma Revisão de escopo da Literatura

ABSTRACT Introduction: Abdominal wall hernias encompass both ventral and incisional hernias, often poorly classified regarding complexity in general. This study aims to conduct a review on the primary topics related to defining the complexity of ventral hernias. Methods: this is a scope review conducted following the guidelines recommended by the PRISMA-ScR directive. Searches were carried out in electronic databases including PubMed, LILACS, and EMBASE, using the descriptors: Abdominal Hernia, Hernia, Ventral Hernia, Incisional Hernia, Complex, Classification, Classify, Grade, Scale, and Definition. Combinations of these terms were employed when appropriate. Inclusion criteria encompassed articles with definitions and classifications of complex hernias, as well as those utilizing these classifications to guide treatments and patient allocation. Synonyms and related topics were also considered. Articles outside the scope or lacking the themes in their title or abstract were excluded. The database search was conducted up to July 29, 2023. Results: several hernia classifications were identified as useful in predicting complexity. For this study, we considered six main criteria: size and location, loss of domain, use of abdominal wall relaxation techniques, characteristics of imaging exams, status of the subcutaneous cellular tissue, and likelihood of recurrence. Conclusion: complex abdominal wall hernias can be defined by characteristics analyzed collectively, relating to the patients previous clinical status, size and location of the hernia defect, status of subcutaneous cellular tissue, myofascial release techniques, and other complicating factors.

RESUMO Introdução: As hérnias da parede abdominal, englobam em seu conceito as hérnias ventrais e incisionais. Essas hérnias são mal classificadas quanto à complexidade de forma geral. Esse estudo tem por objetivo realizar uma revisão sobre os principais tópicos relacionados à definição de complexidade das hérnias ventrais. Métodos: trata-se de revisão de escopo realizada com as orientações preconizadas pela diretriz PRISMA-ScR. Foram realizadas buscas nas bases de dados eletrônicas do PubMed, LILACS e EMBASE, empregando os descritores: "Abdominal Hernia"; Hernia; "Ventral Hernia"; "Incisional Hernia"; Complex; Classification, Classify, Grade, Scale e definition. Combinações entre os termos foram utilizadas quando oportunas. Os critérios de inclusão abrangiam artigos com definições e classificações de hérnias complexas, além daqueles que usavam essas classificações para orientar tratamentos e alocação de pacientes. Sinônimos e tópicos relacionados também foram considerados. Artigos fora do escopo ou sem os temas no título ou resumo foram excluídos. A busca nas bases de dados foi realizada até o dia 29/07/2023. Resultados: diversas classificações de hérnias foram identificadas como sendo úteis para prever complexidade. Consideramos para esse estudo seis critérios principais: tamanho e localização, perda de domicílio, uso de técnicas de relaxamento da parede abdominal, características dos exames de imagem, status do tecido celular subcutâneo e chance de recorrência. Conclusão: as hérnias complexas da parede abdominal podem ser definidas por características analisadas conjuntamente e que estão relacionadas ao estado clínico prévio do paciente, tamanho e localização do defeito herniário, status do tecido celular subcutâneo, técnicas de liberação miofascial e outros fatores complicadores..